CN2526072Y

CN2526072Y - Filtering element for two-stage filtering

Info

Publication number: CN2526072Y
Application number: CN 01257693
Authority: CN
Inventors: 张作仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-30
Filing date: 2001-10-30
Publication date: 2002-12-18
Anticipated expiration: 2011-10-30

Abstract

The utility model relates to a filtering element for two-stage filtering, mainly comprising an upper cover body, a lower cover body, an inner frame, an outer frame and a filtering net. The utility model is characterized in that the upper cover body and the lower cover body are connected with the two ends of the inner frame and the outer frame to form a structure taking a vessel-shaped along the axial cross section; the filtering net is formed by folding a filtering material; and the filtering net is divided into a primary filtering net and a secondary filtering net, and the primary filtering net and the secondary filtering net are respectively fixed inside the sleeve of the outer frame and the inner frame and the round drum which is formed by surrounding the inner frames. The utility model has the advantages of simple structure, high filtering density and good working pressure resistance performance. The utility model can be widely used in various filtering situations.

Description

Cascade filtration filter stamen

The utility model relates to a kind of filter, especially a kind of filter filter stamen that has cascade filtration.

Traditional filter such as paper filter, glass fiber filter etc., all adopt the one-level filtration, promptly adopt paper medium or fiberglass media to make the filter stamen as filter screen, adopt the filter of this structure can satisfy most of requirement of filtering basically, and have the advantages that manufacturing process is simple, cost is low, but still there is following shortcoming: 1, can't be used for the big filtration environment of operating pressure, when the operating pressure of filter is big, paper medium or fiberglass media are easily broken, and therefore do not satisfy the big needs of operating pressure; 2, filtering accuracy is not high, and such filter will improve filtering accuracy, certainly will increase the density of filter screen, and this just makes the filter screen blockage phenomenon easily, uses inconvenience.

The purpose of this utility model is to provide a kind of filtering accuracy height, the difficult filter filter stamen that stops up and can work under the hyperbaric environment.

For achieving the above object, the utility model mainly comprises upper cover body, lower cover, in, outer skeleton and filter screen, in described, outer skeleton turns to cylinder by the hard thin slice that is evenly distributed with through hole and is made, the inner frame internal diameter is less than outer skeleton internal diameter, inner frame is socketed into along cross section with outer skeleton and is circular structure, described filter screen adopts filter material Zhe to close and forms, it is characterized in that: described filter screen is divided into one-level filter screen and secondary filter screen, the filter densities of one-level filter screen is a bit larger tham the filter densities of secondary filter screen, described upper cover body, lower cover with in, outer skeleton two ends connect into the structure that roughly is " ware " shape along shaft section, and described filter screen is separately fixed in the cylinder that sleeve between outer skeleton and inner frame and inner frame surround.

Described hard thin slice can be a sheet metal, or other material is stamped to form.

The filter material that described filter screen adopted can be filter materials such as papery, fiberglass media or stainless steel wire.

The filter densities of described one-level filter screen and secondary filter screen can be made on demand.

Adopt said structure, filtrate is flow through one-level filter screen and secondary filter screen successively, like this, the one-level filter screen can filter the bigger filter residue of volume, and the secondary filter screen has improved filter densities greatly after filtering the less filter residue of volume, be difficult for blockage phenomenon again, owing to adopted the secondary filter screen, can reduce the flow velocity of filtrate greatly simultaneously, have the function that reduces pressure.

Fig. 1 is the structural representation of the utility model embodiment.

Down in that the utility model is described in further detail in conjunction with the accompanying drawings.

Cascade filtration filter stamen as shown in Figure 1, mainly comprise upper cover body 1, lower cover 6, inner frame 3, outer skeleton 2, one-level filter screen 5 and secondary filter screen 4, wherein upper cover body 1 and lower cover 6 sheet metal that leaves aperture by the centre is stamped to form and is circular, inner frame 3, outer skeleton 2 turns to cylinder by the hard sheet metal that is evenly distributed with through hole and is made, inner frame 3 internal diameters are less than outer skeleton 2 internal diameters, inner frame 3 is socketed into along cross section with outer skeleton 2 and is circular structure, upper cover body 1, lower cover 6 with in, outer skeleton 3,2 two ends connect into the structure that roughly is " ware " shape along shaft section, one-level filter screen 5 and secondary filter screen 4 all adopt glass fiber filter Zhe to close and form, the filter densities of one-level filter screen 5 is a bit larger tham the filter densities of secondary filter screen 4, one-level filter screen 5 is fixed on the cylinder interior that inner frame 3 surrounds, and the secondary filter screen is fixed in the sleeve of 3 of outer skeleton 2 and inner frames.

During use, filtrate flows into by upper and lower cover body, and passes through the one-level filter screen successively, inner frame, and secondary filter screen and outer skeleton flow out to filter stamen both sides, and simple in structure, the filter densities height can be widely used in the various filtration environment.

Claims

1, a kind of filter filter stamen that has cascade filtration, mainly comprise upper cover body, lower cover, in, outer skeleton and filter screen, in described, outer skeleton turns to cylinder by the hard thin slice that is evenly distributed with through hole and is made, the inner frame internal diameter is less than outer skeleton internal diameter, inner frame is socketed into along cross section with outer skeleton and is circular structure, described filter screen adopts filter material Zhe to close and forms, it is characterized in that: described filter screen is divided into one-level filter screen and secondary filter screen, the filter densities of one-level filter screen is equal to or greater than the filter densities of secondary filter screen, described upper cover body, lower cover with in, outer skeleton two ends connect into the structure that roughly is " ware " shape along shaft section, and described filter screen is separately fixed in the cylinder that sleeve between outer skeleton and inner frame and inner frame surround.

2, the filter filter stamen that has cascade filtration as claimed in claim 1 is characterized in that the filter material that described filter screen adopts can be filter materials such as papery, fiberglass media or stainless steel wire.